fix pie chart clipping
fix pie chart clipping

fixes #309

jjatie/Charts,Shannon-s-Dreamland/Charts,StephenVinouze/ios-charts,GreenCom-Networks/ios-charts,wangpei421/ios-charts,quyetdd/ios-charts,jjatie/Charts,AlanJN/ios-charts,convergeeducacao/Charts,zwcshy/ios-charts,leoMehlig/Charts,ConcepterDev/ios-charts,GreenCom-Networks/ios-charts,dtrauger/Charts,pajai/ios-charts,boluomeng/Charts,MAARK/Charts,stardust139/ios-charts,Ewg777/ios-charts,iDay/ios-charts,ekohe/ios-charts,LiveHappier/Charts,jesseXu/Charts,niraj-rayalla/ios-charts,sunkanmi-akintoye/ios-charts,liuxuan30/Charts,slash7/ios-charts,programming086/ios-charts,Roeun/ios-charts,liuxuan30/Charts,dtrauger/Charts,koroff/Charts,ConcepterDev/ios-charts,icecrystal23/ios-charts,leoMehlig/Charts,yas375/ios-charts,wangyanmz/ios-charts,liuxuan30/ios-charts,Eflet/Charts,Xgbn/ios-charts,zntfdr/ios-charts,FreddyZeng/Charts,FelixMLians/ios-charts,zntfdr/ios-charts,koroff/Charts,dereknex/ios-charts,danielallsopp/Charts,MAARK/Charts,yfujiki/ios-charts,ConcepterDev/ios-charts,TheLittleBoy/ios-charts,sai43/ios-charts,mobistix/ios-charts,slash7/ios-charts,yanfeng0107/ios-charts,KerryJava/ios-charts,wangpei421/ios-charts,FelixMLians/ios-charts,summerlove57/ios-charts,StephenVinouze/ios-charts,SereivoanYong/Charts,summerlove57/ios-charts,hanquochan/Charts,Bogon/ios-charts,fhchina/ios-charts,smokyonion/ios-charts,Insfgg99x/ios-charts,Roeun/ios-charts,yfujiki/ios-charts,danielgindi/Charts,danielgindi/ios-charts,iDay/ios-charts,Bogon/ios-charts,iDay/ios-charts,zwcshy/ios-charts,FreddyZeng/Charts,stratistore/ios-charts,parkboo/ios-charts,danielgindi/ios-charts,KevinJhon464/ios-charts,zwcshy/ios-charts,yanfeng0107/ios-charts,leoMehlig/Charts,boluomeng/Charts,noais/ios-charts,jum/Charts,machelix/ios-charts,slash7/ios-charts,Shannon-s-Dreamland/Charts,convergeeducacao/Charts,mobistix/ios-charts,3squared/ios-charts,hbucius/ios-charts,GreenCom-Networks/ios-charts,boluomeng/Charts,codeHatcher/ios-charts,mpullman/ios-charts,Taitanoshadow/ios-charts,sunkanmi-akintoye/ios-charts,gjpc/ios-charts,gunterhager/ios-charts,duanhjlt/ios-charts,hbucius/ios-charts,pajai/ios-charts,danielgindi/Charts,bestwpw/ios-charts,niraj-rayalla/ios-charts,liuxuan30/ios-charts,codeHatcher/ios-charts,jjatie/Charts,KerryJava/ios-charts,icecrystal23/ios-charts,Insfgg99x/ios-charts,Xgbn/ios-charts,dereknex/ios-charts,gjpc/ios-charts,jum/Charts,hbucius/ios-charts,hanquochan/Charts,hanquochan/Charts,GreenCom-Networks/ios-charts,Taitanoshadow/ios-charts,stratistore/ios-charts,duanhjlt/ios-charts,parkboo/ios-charts,fbernardo/ios-charts,MAARK/Charts,Eliane1991/ios-charts,FreddyZeng/Charts,noais/ios-charts,ColorPenBoy/ios-charts,leoMehlig/ios-charts,franqueli/ios-charts,FelixMLians/ios-charts,leoMehlig/Charts,koroff/Charts,shujucn/ios-charts,danielgindi/ios-charts,dtrauger/Charts,e7868a/ios-charts,Ewg777/ios-charts,icecrystal23/ios-charts,programming086/ios-charts,liuxuan30/ios-charts,Eflet/Charts,leoMehlig/ios-charts,wangpei421/ios-charts,stardust139/ios-charts,Eflet/Charts,yas375/ios-charts,AlexanderMazaletskiy/ios-charts,mobistix/ios-charts,SBGMobile/Charts,danielgindi/ios-charts,SBGMobile/Charts,3squared/ios-charts,fbernardo/ios-charts,jjatie/Charts,AlexanderMazaletskiy/ios-charts,LiveHappier/Charts,ekohe/ios-charts,StephenVinouze/ios-charts,leoMehlig/ios-charts,TheLittleBoy/ios-charts,aelam/Charts,wdxgtsh/ios-charts,smokyonion/ios-charts,danielgindi/Charts,franqueli/ios-charts,wangyanmz/ios-charts,boluomeng/Charts,ColorPenBoy/ios-charts,KerryJava/ios-charts,StephenVinouze/ios-charts,jesseXu/Charts,LiveHappier/Charts,leoMehlig/ios-charts,AlexanderMazaletskiy/ios-charts,jum/Charts,Bogon/ios-charts,gjpc/ios-charts,Insfgg99x/ios-charts,sunkanmi-akintoye/ios-charts,hanquochan/Charts,machelix/ios-charts,yas375/ios-charts,machelix/ios-charts,MAARK/Charts,danielgindi/Charts,SBGMobile/Charts,danielallsopp/Charts,TheLittleBoy/ios-charts,fhchina/ios-charts,FreddyZeng/Charts,smokyonion/ios-charts,quyetdd/ios-charts,gunterhager/ios-charts,jinlingye/ios-charts,AlanJN/ios-charts,zntfdr/ios-charts,shujucn/ios-charts,aelam/Charts,neel4r/ios-charts,ekohe/ios-charts,Roeun/ios-charts,liuxuan30/Charts,SereivoanYong/Charts,mpullman/ios-charts,shujucn/ios-charts,gunterhager/ios-charts,Eflet/Charts,SereivoanYong/Charts,gunterhager/ios-charts,summerlove57/ios-charts,sai43/ios-charts,sai43/ios-charts,liuxuan30/Charts,dereknex/ios-charts,mpullman/ios-charts,liuxuan30/ios-charts,franqueli/ios-charts,noais/ios-charts,dtrauger/Charts,icecrystal23/ios-charts,KevinJhon464/ios-charts,neel4r/ios-charts,bestwpw/ios-charts,jesseXu/Charts,wdxgtsh/ios-charts,jum/Charts,wangyanmz/ios-charts,quyetdd/ios-charts,aelam/Charts,HSoshiant/ios-charts,jinlingye/ios-charts,stardust139/ios-charts,HSoshiant/ios-charts,bestwpw/ios-charts,duanhjlt/ios-charts,e7868a/ios-charts,parkboo/ios-charts,yanfeng0107/ios-charts,wdxgtsh/ios-charts,programming086/ios-charts,koroff/Charts,Eliane1991/ios-charts